Chronic Hyperglycemia before Spinal Cord Injury Increases Inflammatory Reaction and Astrogliosis after Injury: Human and Rat Studies.

Abstract:

:Traumatic spinal cord injury (SCI) can cause permanent disabilities that seriously reduce quality of life. We evaluated the effects of chronic hyperglycemia before SCI on inflammatory markers and functional recovery after SCI in human patients and a rat model. In the human study, multivariate logistical regression analysis revealed that hemoglobin A1c (HbA1c) values, reflecting average plasma glucose concentration over a 3 month period, at admission were a significant risk factor for poor functional recovery. Moreover, patients with chronic hyperglycemia (HbA1c ≥ 6.5%) had high concentrations of inflammatory biomarkers (interleukin [IL]-6 and IL-8) of cerebrospinal fluid after SCI. Consistent with patient findings, chronic hyperglycemia before SCI in rats was associated with increased inflammatory responses and oxygen-free radicals in the spinal cord and blood, thus resulting in poor functional recovery and histological outcomes. Tight glucose control before SCI decreased the harmful effects of hyperglycemia after SCI in both human and rat studies. Our findings suggest that chronic hyperglycemia before SCI may be a significant prognostic factor with a negative impact on functional and histological outcomes, highlighting the importance of tight glucose control before SCI.

journal_name

J Neurotrauma

journal_title

Journal of neurotrauma

authors

Park KS,Kim JB,Keung M,Seo YJ,Seo SY,Mun SA,Lee YS,Cho DC,Hwang JH,Han I,Kim CH,Kim KT

doi

10.1089/neu.2019.6724

subject

Has Abstract

pub_date

2020-05-01 00:00:00

pages

1165-1181

issue

9

eissn

0897-7151

issn

1557-9042

journal_volume

37

pub_type

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